Software

This software involves files to fit the statistical models described in Smalling et al. Specifically, there are R scripts and associated stan model files (when appropriate) for comparing PFAS concentrations among public-supply and private-wells and as a function of geospatial predictor variables. There is also an R script for modeling the number of PFAS chemicals detected among water...

Heavy is a Fortran program for calculating the change in gravity caused by the change in groundwater storage as predicted by a MODFLOW groundwater-flow model. Gravity change is calculated relative to the initial time step at user-specified locations (e.g., measurement locations). At each location, the gravitational attraction is the sum of the attraction caused by storage change...

R code for modeling survival of nestling and fledgling golden eagles. It is supplemental material for a manuscript submitted to Journal of Raptor Research.

The R package precompute is used to perform periodic computations to set up data for loading and rendering in Shiny applications. These computations typically take too long to conduct on the fly, which is why they are performed with some frequency using this package.

NSHM Hazard Tool, a suite of web tools for the NSHMP.

This python code models event depths by comparing high-frequency (~0.5-0.04 Hz) teleseismic body-wave waveforms to synthetics. High-frequency body waves contain depth information, primarily in the form of depth phases. While lower frequencies are used to generate moment tensor solutions, high-frequency body waves allow for more accurate estimates of source depth. A moment tensor solution...

This Python package provides functions to simulate advection and dispersion of numerical particles using a lagrangian particle-tracking algorithm for 2 and 3-dimensionl hydraulic simulation results. Users may customize particle subclasses to provide custom particle classes. For example, the drift of larval fish, by creating classes to add behavior to particles. (McDonald and Nelson, 2021...

Software package to support regression-based regionalization of streamflow frequency statistics that follow a log-Pearson type III distribution.

This repository centralizes R code used to examine how the influence of fine-scale habitat characteristics on Greater sage-grouse (Centrocercus urophasianus) nest site selection and nest survival varies by mesic and xeric site conditions, utilizing data collected from a wide range of study sites in Nevada and California, USA. The R script "nest_selection_model.R" provides code for a GLMM...

Code to reproduce analyses of turtle occupancy in the Sacramento Valley and Sacramento-San Joaquin River Delta

The PMAP tool is a one-dimensional plume model that predicts ash aggregation within an erupting volcanic plume. The tool was developed by D. W. Hoffman at Stanford, extending from the Plumeria model written by L. G. Mastin at USGS CVO. The code operates using Matlab. The purpose of this repository is to present the code used in the following publication, currently under review at Journal...

This software involves R scripts to download and process large-scale spatial data defined by an extent input by the user. The code then resamples data to the desired resolution, downloads metadata from a public website on West Nile virus prevalence in mosquito pools, then extracts spatial layer data as covariates for each record. Also, this software involves R script to fit models of...